Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Butter Sandwich
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Cream the butter in a bowl.
Add the sugar and mix well.
Beat in the eggs one at a time.
Gradually add half of the flour and a little milk.
Continue adding more flour and milk by degrees.
Finally, fold in the baking powder.
Bake
Pour the batter into two baking tins.
Bake in a moderate oven at 350°F (175°C) until golden.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Creamed with sugar to trap air and give the cake a tender, rich texture.
- Eggs
- Bind the batter and add structure and richness as they are beaten in.
- Flour
- Forms the main structure of the cake once it sets in the oven.
- Baking powder
- Releases gas in the batter so the cake rises and becomes light.
- Sugar
- Adds sweetness and helps the creamed butter hold air, and aids browning.
- Milk
- Adds moisture and loosens the batter so it blends with the flour evenly.
The step that matters
Adding the baking powder last. Baking powder starts releasing gas once it is wet and mixed. Folding it in gently at the end, rather than beating it hard, keeps the air bubbles intact so the cake rises evenly and stays light.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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